| article html file updated | 7 February 2020 20:28 CET | Update | https://www.mdpi.com/1999-4907/8/1/17 |
| article html file updated | 22 September 2019 16:05 CEST | Update | - |
| article html file updated | 4 May 2019 17:29 CEST | Update | - |
| article html file updated | 8 February 2017 10:17 CET | Update | - |
| article html file updated | 29 December 2016 03:47 CET | Original file | - |
| article xml uploaded. | 29 December 2016 03:46 CET | Original file | https://www.mdpi.com/1999-4907/8/1/17/xml |
| article pdf uploaded. | 29 December 2016 03:46 CET | Version of Record | https://www.mdpi.com/1999-4907/8/1/17/pdf |
